| The Cave (Woodford) LTD | Essex | A rating |
| The Cave Hotel and Resort | Canterbury | A rating |
| The Cavendish Pub Ltd | London | A rating |
| The Cedars and Larches Care Home | Iikeston | A rating |
| The Cedars Care Home (Ashford) Ltd t/a The Cedars Care Home | Ashford | A rating |
| The Cedars Medical Centre | Stoke-on-Trent | A rating |
| The Cedars Rest Home | Altrincham | A rating |
| The Cedars Surgery | Weston-super-Mare | A rating |
| The Cedars Surgery | Maidenhead | A rating |
| The Cedarvale Group | London | A rating |
| The Center for Countering Digital Hate | London | A rating |
| The Central Gurdwara (British Isles) London Khalsa Jatha | London | A rating |
| THE CENTRAL HOTEL LLANDUDNO LTD. | Llandudno | A rating |
| THE CENTRAL LONDON CLINIC LTD | London | A rating |
| The Centre for Enterprise, Markets and Ethics | Oxford | A rating |
| The Centre for Justice Innovation UK | London | A rating |
| The Centre for Language Education and Cooperation, UK | London | A rating |
| The Centre for Reproductive & Genetic Health | London | A rating |
| The Centre for Supporters of Human Rights | London | A rating |
| The Centre London Ltd | London | A rating |
| The Centre of Horseback Combat Limited | Hemel Hempstead | A rating |
| The Ceramicists designers and makers | London | A rating |
| The Chaand Company Ltd t/a Milton Convenience Store | Edinburgh | A rating |
| The Chabad Jewish Community of Central London | London | A rating |
| The Challenge Academy Trust | Warrington | A rating |
| The Chamo Group Limited | Preston | A rating |
| The Champs (UK) Limited | London | A rating |
| The Chancery Lane Project | Lewes | A rating |
| The Change Foundation | Wallington | A rating |
| The Changing Workplace Ltd | Lewes | A rating |
| The Channel Company EMEA Ltd | London | A rating |
| The Chantecaille Conservation Foundation UK Limited | London | A rating |
| The Chapel House | Puddington | A rating |
| The Chapter Hotels Limited | London | A rating |
| The Charing Medical Partnership | CHARING | A rating |
| The Charitable Emporium | Bournemouth | A rating |
| The Charities Aid Foundation | West Malling | A rating |
| The Charity Bank Limited | Tonbridge | A rating |
| The charity of the congregation of the Ursulines of Jesus | Swansea | A rating |
| The Charity of the Sisters of Christ CIO | London | A rating |
| The Charles Group Limited | London | A rating |
| The Charlton Road Christian Church Trust | Birminham | A rating |
| THE CHARM BRIGHTON LTD | Brighton | A rating |
| The Charter School | London | A rating |
| The Chartered Institute for Securities & Investment | London | A rating |
| The Chartered Institute of Logistics and Transport | Corby | A rating |
| The Chartered Institution of Building Services Engineers | London | A rating |
| THE CHARTRIDGE CONFERANCE COMPANY LIMITED | HITCHIN | A rating |
| The Chase Care Home Ltd | Eastbourne | A rating |
| The Chase Creative Consultants Ltd | London | A rating |
| The Chaseley Trust | Eastbourne | A rating |
| The chatwal boutique hotel | Blackpool | A rating |
| The Chedington Estate Limited | Beaminster | A rating |
| The Cheeky Panda Ltd | London | A rating |
| The Chelsea Food and Wine Company Limited | Harrow | A rating |
| The Chelsea Houseware Co Ltd T/A Farmer Brothers and J.D Beardmore | London | A rating |
| The Chelsea Psychology Clinic Limited | London | A rating |
| The Chelsea Spa Ltd | London | A rating |
| The Chester Link | Chester | A rating |
| THE CHESTERFORD GROUP LIMITED | Essex | A rating |
| The Chestnut Tree | Derby | A rating |
| The Chestnuts Surgery | Sittingbourne | A rating |
| The Chiba Bank, Ltd | London | A rating |
| The Chichester Diocesan Fund and Board of Finance (Incorporated) | Hove | A rating |
| THE CHICKEN STATION LTD | London | A rating |
| The Chiefconerstone Pharmacy Limited | Greenford | A rating |
| The Childhood Trust | London | A rating |
| The Children's Hospital Charity (trading as Sheffield Children's Hospital Charity) | Sheffield | A rating |
| THE CHILDREN'S INVESTMENT FUND FOUNDATION (UK) | LONDON | A rating |
| The Children's Place Speech & Language Therapy Ltd. | London | A rating |
| The Children's Trust | Tadworth | A rating |
| The Chiltern & The Brook Surgeries | Chalgrove | A rating |
| The Chiltern Centre | Henley on Thames | A rating |
| The Chiltern Hills Academy | Chesham | A rating |
| The Chinese Kitchen LTD | Brighton | A rating |
| The Chinese Room Ltd | Brighton | A rating |
| The Chip Co | Aylesbury | A rating |
| The Chiro & Physio Clinic Liverpool (UK) Limited | Liverpool | A rating |
| The Chirohealth Clinic Ltd | Scunthorpe | A rating |
| The Chisholme Institute | Hawick | A rating |
| THE CHO DESIGN LTD | London | A rating |
| The Choral Hub Limited TA Biiah | Cambridge | A rating |
| The Chosen Generation Assembly RCCG | Manchester | A rating |
| The Chowdury Accountants Ltd | Oldham | A rating |
| The Christian Community in Great Britain | Forest Row | A rating |
| The Christie Charity | Manchester | A rating |
| The Christie Pathology Partnership LLP | Manchester | A rating |
| The Christleton Restaurant Company Ltd | Chester | A rating |
| The Church of Jesus Christ of Latter-day Saints (Great Britain) | High Wycombe | A rating |
| The Church of London Publishing Limited | London | A rating |
| The Church of Pentecost - UK | Dagenham | A rating |
| The Church of Scotland, | Edinburgh | A rating |
| THE CHURCH OF SIGNS AND WONDERS (UK) LTD | Leicester | A rating |
| The Church of the Living God, Pillar and Foundation of the Truth, The Light of the World, South London | London | A rating |
| The Church of the Londoners | London | A rating |
| The Church of the Lord (Aladura) Worldwide | London | A rating |
| THE CHURCHES OF GOD IN UK | London | A rating |
| The Churchill Clinic | Chatham | A rating |
| The Churro Kingdom Limited | Liverpool | A rating |
| The Cinnamon Tree (Sidmouth) Ltd | Sidmouth | A rating |
| The Circle Practice | Harrow | A rating |
| The Circle Trust | WOKINGHAM | A rating |
| The Citizens Foundation UK | London | A rating |
| The City & Guilds of London Institute | London | A rating |
| The City of Edinburgh Council | Edinburgh | A rating |
| The City of Leicester College | Leicester | A rating |
| The City of Liverpool College | Liverpool | A rating |
| THE CITY OF MERCY OUTREACH | LEICESTER | A rating |
| The City Pub Group Limited | London | A rating |
| THE CITY RESTAURANT LTD | London | A rating |
| The City Talking Inc | Leeds | A rating |
| The Citywall Project Community Interest Company | Salford | A rating |
| The Claims Compensation Group Limited | Lincoln | A rating |
| the claims specialists uk limited | luton | A rating |
| The Clancy Group | Harefield | A rating |
| The Claremont Fan Court Foundation Limited | Esher | A rating |
| The Clavadel (Guildford) CO limited | Guildford | A rating |
| The Clear Company | Warrington | A rating |
| The Clearing Consultancy Limited | London | A rating |
| The Cleggan Estate Company Limited | Ballymena | A rating |
| The Cleo Belgravia Ltd | London | A rating |
| The Clerkenwell Brothers | London | A rating |
| The Client Relationship Consultancy Limited | London | A rating |
| The Climate Group | London | A rating |
| THE CLOCKSHOP LTD | LANCASHIRE | A rating |
| The Clod Ensemble | London | A rating |
| The Close Residential Home | Snettisham | A rating |
| The Clove Club Ltd | London | A rating |
| THE CLUTCH CENTRE LTD | LUTON | A rating |
| The Co-Mission Churches Trust | Raynes Park | A rating |
| The Co-operative Academies Trust | Manchester | A rating |
| The Co-operative Development Society Limited | London | A rating |
| The Coach House Care Home | Wolverhampton | A rating |
| The Coach House Nursing Home | Ripon | A rating |
| The Coach House Residential Home | Hemsby | A rating |
| The Coach House Veterinary Clinic Ltd | Witney | A rating |
| The Coaches' Voice (UK) Ltd | Camden | A rating |
| The Coalition for a Digital Economy (Coadec) Ltd t/a The Startup Coalition | London | A rating |
| The Coastal Partnership | Wymondham | A rating |
| The Cobden Centre | London | A rating |
| The Coconut Bunch Ltd T/A The Coconut Bunch | Ayr | A rating |
| THE COCONUT COMPANY (UK) LTD | LONDON | A rating |
| The Coconut Tree Limited | Cheltenham | A rating |
| THE COD MOTHER NORTH WEST LTD | Blackpool | A rating |
| The CodeV Ltd | Preston | A rating |
| The Coffee House (UK) Limited | Worthing | A rating |
| The Coffee Lounge (Lindley) Limited | Huddersfield | A rating |
| The Coffee Room LTD | Halesowen | A rating |
| The Cognition Company Group Ltd | London | A rating |
| The Cogworks Ltd | London | A rating |
| The Cohens Group | Bolton | A rating |
| The Collaborate I CIC | Birmingham | A rating |
| The Collaborative London Limited | London | A rating |
| The College of Health Ltd t/a The McTimoney College of Chiropractic | Abingdon | A rating |
| The College of Optometrists | London | A rating |
| The College of Richard Collyer | Horsham | A rating |
| The College of St Barnabas | Lingfield | A rating |
| The College of West Anglia | King's Lynn | A rating |
| The College Practice | London | A rating |
| The College Practice | MAIDSTONE | A rating |
| The Collegiate Church of St Mary | Warwick | A rating |
| The Collegiate Trust | Purley | A rating |
| The Collinson Group Limited | London | A rating |
| The Colne Valley Care Company Limited | Earls Colne | A rating |
| The Colour Box Montessori Nursery School Ltd | Earlsfield | A rating |
| The Colourwheel Montessori Nursery Limited | Black Notley | A rating |
| The Colt Car Company Ltd | Cirencester | A rating |
| THE COLWORTH STORES LTD | LONDON | A rating |
| The Comberton Nursing Home | Stourbridge | A rating |
| THE COMMEMORATIVE COIN COMPANY LIMITED | Edinburgh | A rating |
| The Common Good Foundation | London | A rating |
| The Common Guild Limited | Glasgow | A rating |
| The Common Purpose Charitable Trust | London | A rating |
| The Community Brain CIC | Greater London | A rating |
| The Community Church in the North West of England | Southport | A rating |
| The Community Lettings Management Company LTD | Liverpool | A rating |
| The Community of Our Lady of Walsingham | Dereham | A rating |
| The Community of the Franciscan Friars of the Renewal | Canning Town | A rating |
| The Community Of The Many Names Of God | Carmarthenshire | A rating |
| THE COMPANY OF BIOLOGISTS, LIMITED | Cambridge | A rating |
| THE COMPANY OF CUTLERS IN HALLAMSHIRE | SHEFFIELD | A rating |
| The Compass Education Trust Limited | Billericay | A rating |
| THE COMPATRIOT LTD | NOTTINGHAM | A rating |
| The Competition and Markets Authority | London | A rating |
| The ComplEAT Food Group | Redhill | A rating |
| The Compleat Food Group (Holdings) Limited | Nottingham | A rating |
| The Complete Works Alternative Education | Aldgate East | A rating |
| The Composite Bonding Company Ltd | Oldham | A rating |
| The Conde Nast Publications Limited | London | A rating |
| The Conduit Holdco Limited | London | A rating |
| The Config Team Limited | Skelmersdale | A rating |
| The Conflict and Environment Observatory | Hebden Bridge | A rating |
| The Congregation of the Adorers of the Sacred Heart of Jesus of Montmartre OSB (Tyburn Nuns) | London | A rating |
| The Congregation of the Daughters of the Cross of Liege | Sutton | A rating |
| The Congregation of the Franciscan Sisters of St. Mary of the Angels | Fareham | A rating |
| The Congregation of the Mission | London | A rating |
| The Congregation of the Passion of Jesus Christ | Herne Bay | A rating |
| The Connaught Hotel Limited | London | A rating |
| The Connaught Square NHS General Practice | London | A rating |
| The Conservative and Unionist Party | London | A rating |